Much like all white dial / blue accents Autavia 1163T models are generally referred to as Sifferts, just about any early Daytona with the block registers is referred to as a Paul Newman - and while not terribly rare (you can find 10-15 examples coming up for auction in any given year) they run from around $75-80k for the more run-of-the-mill examples to more than $1 million (in a recent auction) for the truly rare models.